Here is the command line to convert an Adobe PDF document to TIF on Linux, in a suitable format to be used as input for the Linux version of the Softek Barcode Reader Toolkit:
For color documents:
gs -dNOPAUSE -r300 -sDEVICE=tiffscaled24 -sCompression=lzw -dBATCH -sOutputFile=output.tif input.pdf
For black and white:
gs -dNOPAUSE -r300 -sDEVICE=tiffg4 -sCompression=lzw -dBATCH -sOutputFile=output.tif input.pdf
